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Commit 2d9e01b4 authored by Jean-Paul Saman's avatar Jean-Paul Saman
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stream_filter/httplive.c: rewrite parsing of HLS m3u8 files 

The parsing of .m3u8 HLS files was too position dependend and did not work well
with some implementations of HLS playlist files. Parsing and reading the .m3u8 file
are now separated.
parent 9ad9fe48
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Showing with 245 additions and 400 deletions
modules/stream_filter/httplive.c
View file @ 2d9e01b4
......@@ -136,13 +136,16 @@ static int Read (stream_t *, void *p_read, unsigned int i_read);
static int Peek (stream_t *, const uint8_t **pp_peek, unsigned int i_peek);
static int Control(stream_t *, int i_query, va_list);
static ssize_t access_ReadM3U8(stream_t *s, vlc_url_t *url, uint8_t **buffer);
static ssize_t ReadM3U8(stream_t *s, uint8_t **buffer);
static char *ReadLine(uint8_t *buffer, uint8_t **remain, size_t len);
static int AccessOpen(stream_t *s, vlc_url_t *url);
static void AccessClose(stream_t *s);
static char *AccessReadLine(access_t *p_access, uint8_t *psz_tmp, size_t i_len);
static int AccessDownload(stream_t *s, segment_t *segment);
static void* hls_Thread(vlc_object_t *);
static int get_HTTPLivePlaylist(stream_t *s, hls_stream_t *hls);
static segment_t *segment_GetSegment(hls_stream_t *hls, int wanted);
static void segment_Free(segment_t *segment);
......@@ -349,7 +352,7 @@ static segment_t *segment_Find(hls_stream_t *hls, int sequence)
return NULL;
}
static int live_ChooseSegment(stream_t *s, int current)
static int ChooseSegment(stream_t *s, int current)
{
stream_sys_t *p_sys = (stream_sys_t *)s->p_sys;
hls_stream_t *hls = hls_Get(p_sys->hls_stream, current);
......@@ -361,21 +364,34 @@ static int live_ChooseSegment(stream_t *s, int current)
int wanted = -1;
int duration = 0;
int count = vlc_array_count(hls->segments);
for (int i = count; i >= 0; i--)
int i = p_sys->b_live ? count - 1 : 0;
while((i >= 0) && (i < count) && vlc_object_alive(s))
{
segment_t *segment = segment_GetSegment(hls, i);
if (segment)
assert(segment);
if (segment->duration > hls->duration)
{
duration += segment->duration;
if (duration >= 3 * hls->duration)
{
/* Start point found */
wanted = i;
break;
}
msg_Err(s, "EXTINF:%d duration is larger then EXT-X-TARGETDURATION:%d",
segment->duration, hls->duration);
}
duration += segment->duration;
if (duration >= 3 * hls->duration)
{
/* Start point found */
wanted = p_sys->b_live ? i : 0;
break;
}
if (p_sys->b_live)
i-- ;
else
i++;
}
msg_Info(s, "Choose segment %d/%d", wanted, count);
return wanted;
}
......@@ -451,30 +467,32 @@ fail:
return NULL;
}
static void parse_SegmentInformation(stream_t *s, hls_stream_t *hls, char *p_read, char *uri)
static int parse_SegmentInformation(stream_t *s, hls_stream_t *hls, char *p_read, char *uri)
{
stream_sys_t *p_sys = s->p_sys;
assert(hls);
assert(p_read);
int duration;
int ret = sscanf(p_read, "#EXTINF:%d,", &duration);
if (ret != 1)
{
msg_Err(s, "expected #EXTINF:<s>,");
p_sys->b_error = true;
return;
}
/* strip of #EXTINF: */
char *p_next = NULL;
char *token = strtok_r(p_read, ":", &p_next);
if (token == NULL)
return VLC_EGENERIC;
/* read duration */
token = strtok_r(NULL, ",", &p_next);
if (token == NULL)
return VLC_EGENERIC;
int duration = atoi(token);
/* Ignore the rest of the line */
/* Store segment information */
char *psz_path = NULL;
if (hls->url.psz_path != NULL)
{
psz_path = strdup(hls->url.psz_path);
if (psz_path == NULL)
{
p_sys->b_error = true;
return;
}
return VLC_ENOMEM;
char *p = strrchr(psz_path, '/');
if (p) *p = '\0';
}
......@@ -485,14 +503,10 @@ static void parse_SegmentInformation(stream_t *s, hls_stream_t *hls, char *p_rea
segment_t *segment = segment_New(hls, duration, psz_uri ? psz_uri : uri);
if (segment)
segment->sequence = hls->sequence + vlc_array_count(hls->segments) - 1;
if (duration > hls->duration)
{
msg_Err(s, "EXTINF:%d duration is larger then EXT-X-TARGETDURATION:%d",
duration, hls->duration);
}
vlc_mutex_unlock(&hls->lock);
free(psz_uri);
return segment ? VLC_SUCCESS : VLC_ENOMEM;
}
static int parse_TargetDuration(stream_t *s, hls_stream_t *hls, char *p_read)
......@@ -511,21 +525,20 @@ static int parse_TargetDuration(stream_t *s, hls_stream_t *hls, char *p_read)
return VLC_SUCCESS;
}
static void parse_StreamInformation(stream_t *s, vlc_array_t **hls_stream,
char *p_read, char *uri)
static int parse_StreamInformation(stream_t *s, vlc_array_t **hls_stream,
hls_stream_t **hls, char *p_read, char *uri)
{
stream_sys_t *p_sys = s->p_sys;
int id;
uint64_t bw;
char *attr;
assert(*hls == NULL);
attr = parse_Attributes(p_read, "PROGRAM-ID");
if (attr == NULL)
{
msg_Err(s, "#EXT-X-STREAM-INF: expected PROGRAM-ID=<value>");
p_sys->b_error = true;
return;
return VLC_EGENERIC;
}
id = atol(attr);
free(attr);
......@@ -534,8 +547,7 @@ static void parse_StreamInformation(stream_t *s, vlc_array_t **hls_stream,
if (attr == NULL)
{
msg_Err(s, "#EXT-X-STREAM-INF: expected BANDWIDTH=<value>");
p_sys->b_error = true;
return;
return VLC_EGENERIC;
}
bw = atoll(attr);
free(attr);
......@@ -543,19 +555,18 @@ static void parse_StreamInformation(stream_t *s, vlc_array_t **hls_stream,
if (bw == 0)
{
msg_Err(s, "#EXT-X-STREAM-INF: bandwidth cannot be 0");
p_sys->b_error = true;
return;
return VLC_EGENERIC;
}
msg_Info(s, "bandwidth adaption detected (program-id=%d, bandwidth=%"PRIu64").", id, bw);
char *psz_uri = relative_URI(s, uri, NULL);
hls_stream_t *hls = hls_New(*hls_stream, id, bw, psz_uri ? psz_uri : uri);
if (hls == NULL)
p_sys->b_error = true;
*hls = hls_New(*hls_stream, id, bw, psz_uri ? psz_uri : uri);
free(psz_uri);
return (*hls == NULL) ? VLC_ENOMEM : VLC_SUCCESS;
}
static int parse_MediaSequence(stream_t *s, hls_stream_t *hls, char *p_read)
......@@ -684,328 +695,207 @@ static int parse_Discontinuity(stream_t *s, hls_stream_t *hls, char *p_read)
return VLC_SUCCESS;
}
static void parse_M3U8ExtLine(stream_t *s, hls_stream_t *hls, char *line)
{
if (*line == '#')
{
int err = VLC_SUCCESS;
if (strncmp(line, "#EXT-X-TARGETDURATION", 21) == 0)
err = parse_TargetDuration(s, hls, line);
else if (strncmp(line, "#EXT-X-MEDIA-SEQUENCE", 21) == 0)
err = parse_MediaSequence(s, hls, line);
else if (strncmp(line, "#EXT-X-KEY", 10) == 0)
err = parse_Key(s, hls, line);
else if (strncmp(line, "#EXT-X-PROGRAM-DATE-TIME", 24) == 0)
err = parse_ProgramDateTime(s, hls, line);
else if (strncmp(line, "#EXT-X-ALLOW-CACHE", 18) == 0)
err = parse_AllowCache(s, hls, line);
else if (strncmp(line, "#EXT-X-DISCONTINUITY", 20) == 0)
err = parse_Discontinuity(s, hls, line);
else if (strncmp(line, "#EXT-X-VERSION", 14) == 0)
err = parse_Version(s, hls, line);
else if (strncmp(line, "#EXT-X-ENDLIST", 14) == 0)
err = parse_EndList(s, hls);
if (err != VLC_SUCCESS)
s->p_sys->b_error = true;
}
}
#define HTTPLIVE_MAX_LINE 4096
static int get_HTTPLivePlaylist(stream_t *s, hls_stream_t *hls)
/* The http://tools.ietf.org/html/draft-pantos-http-live-streaming-04#page-8
* document defines the following new tags: EXT-X-TARGETDURATION,
* EXT-X-MEDIA-SEQUENCE, EXT-X-KEY, EXT-X-PROGRAM-DATE-TIME, EXT-X-
* ALLOW-CACHE, EXT-X-STREAM-INF, EXT-X-ENDLIST, EXT-X-DISCONTINUITY,
* and EXT-X-VERSION.
*/
static int parse_M3U8(stream_t *s, vlc_array_t *streams, uint8_t *buffer, ssize_t len)
{
stream_sys_t *p_sys = s->p_sys;
uint8_t *p_read, *p_begin, *p_end;
/* Download new playlist file from server */
if (AccessOpen(s, &hls->url) != VLC_SUCCESS)
return VLC_EGENERIC;
assert(streams);
assert(buffer);
/* Parse the rest of the reply */
uint8_t *tmp = calloc(1, HTTPLIVE_MAX_LINE);
if (tmp == NULL)
{
AccessClose(s);
msg_Dbg(s, "parse_M3U8\n%s", buffer);
p_begin = buffer;
p_end = p_begin + len;
char *line = ReadLine(p_begin, &p_read, p_end - p_begin);
if (line == NULL)
return VLC_ENOMEM;
}
char *line = AccessReadLine(p_sys->p_access, tmp, HTTPLIVE_MAX_LINE);
if (strncmp(line, "#EXTM3U", 7) != 0)
{
msg_Err(s, "missing #EXTM3U tag");
goto error;
msg_Err(s, "missing #EXTM3U tag .. aborting");
free(line);
return VLC_EGENERIC;
}
free(line);
line = NULL;
for( ; ; )
/* What is the version ? */
int version = 1;
uint8_t *p = (uint8_t *)strstr((const char *)buffer, "#EXT-X-VERSION:");
if (p != NULL)
{
line = AccessReadLine(p_sys->p_access, tmp, HTTPLIVE_MAX_LINE);
if (line == NULL)
uint8_t *tmp = NULL;
char *psz_version = ReadLine(p, &tmp, p_end - p);
if (psz_version == NULL)
return VLC_ENOMEM;
int ret = sscanf((const char*)psz_version, "#EXT-X-VERSION:%d", &version);
if (ret != 1)
{
msg_Dbg(s, "end of data");
break;
}
if (!vlc_object_alive(s))
goto error;
/* some more checks for actual data */
if (strncmp(line, "#EXTINF", 7) == 0)
{
char *uri = AccessReadLine(p_sys->p_access, tmp, HTTPLIVE_MAX_LINE);
if (uri == NULL)
p_sys->b_error = true;
else
{
parse_SegmentInformation(s, hls, line, uri);
free(uri);
}
msg_Warn(s, "#EXT-X-VERSION: no protocol version found, assuming version 1.");
version = 1;
}
else
{
parse_M3U8ExtLine(s, hls, line);
}
/* Error during m3u8 parsing abort */
if (p_sys->b_error)
goto error;
free(line);
free(psz_version);
p = NULL;
}
free(line);
free(tmp);
AccessClose(s);
return VLC_SUCCESS;
error:
free(line);
free(tmp);
AccessClose(s);
return VLC_EGENERIC;
}
static int get_HTTPLiveMetaPlaylist(stream_t *s, vlc_array_t **streams)
{
stream_sys_t *p_sys = s->p_sys;
assert(*streams);
/* Download new playlist file from server */
if (AccessOpen(s, &p_sys->m3u8) != VLC_SUCCESS)
return VLC_EGENERIC;
/* Is it a live stream ? */
p_sys->b_live = (strstr((const char *)buffer, "#EXT-X-ENDLIST") == NULL) ? true : false;
/* Parse the rest of the reply */
uint8_t *tmp = calloc(1, HTTPLIVE_MAX_LINE);
if (tmp == NULL)
{
AccessClose(s);
return VLC_ENOMEM;
}
/* Is it a meta index file ? */
bool b_meta = (strstr((const char *)buffer, "#EXT-X-STREAM-INF") == NULL) ? false : true;
char *line = AccessReadLine(p_sys->p_access, tmp, HTTPLIVE_MAX_LINE);
if (strncmp(line, "#EXTM3U", 7) != 0)
{
msg_Err(s, "missing #EXTM3U tag");
goto error;
}
free(line);
line = NULL;
if (b_meta)
msg_Info(s, "Meta playlist");
else
msg_Info(s, "%s Playlist HLS protocol version: %d", p_sys->b_live ? "Live": "VOD", version);
for( ; ; )
/* */
int err = VLC_SUCCESS;
do
{
line = AccessReadLine(p_sys->p_access, tmp, HTTPLIVE_MAX_LINE);
/* Next line */
p_begin = p_read;
line = ReadLine(p_begin, &p_read, p_end - p_begin);
if (line == NULL)
{
msg_Dbg(s, "end of data");
break;
}
if (!vlc_object_alive(s))
goto error;
/* */
p_begin = p_read;
/* some more checks for actual data */
if (strncmp(line, "#EXT-X-STREAM-INF", 17) == 0)
/* M3U8 Meta Index file */
if (b_meta)
{
p_sys->b_meta = true;
char *uri = AccessReadLine(p_sys->p_access, tmp, HTTPLIVE_MAX_LINE);
if (uri == NULL)
p_sys->b_error = true;
else
if (strncmp(line, "#EXT-X-STREAM-INF", 17) == 0)
{
parse_StreamInformation(s, streams, line, uri);
free(uri);
}
}
else if (strncmp(line, "#EXTINF", 7) == 0)
{
char *uri = AccessReadLine(p_sys->p_access, tmp, HTTPLIVE_MAX_LINE);
if (uri == NULL)
p_sys->b_error = true;
else
{
hls_stream_t *hls = hls_GetLast(*streams);
if (hls)
parse_SegmentInformation(s, hls, line, uri);
p_sys->b_meta = true;
char *uri = ReadLine(p_begin, &p_read, p_end - p_begin);
if (uri == NULL)
err = VLC_ENOMEM;
else
p_sys->b_error = true;
free(uri);
{
hls_stream_t *hls = NULL;
err = parse_StreamInformation(s, &streams, &hls, line, uri);
free(uri);
/* Download playlist file from server */
uint8_t *buf = NULL;
ssize_t len = access_ReadM3U8(s, &hls->url, &buf);
if (len < 0)
err = VLC_EGENERIC;
else
{
/* Parse HLS m3u8 content. */
err = parse_M3U8(s, streams, buf, len);
free(buf);
}
if (hls)
{
hls->version = version;
if (!p_sys->b_live)
hls->size = hls_GetStreamSize(hls); /* Stream size (approximate) */
}
}
}
}
else
{
hls_stream_t *hls = hls_GetLast(*streams);
if ((hls == NULL) && (!p_sys->b_meta))
hls_stream_t *hls = hls_GetLast(streams);
if (hls == NULL)
{
hls = hls_New(*streams, -1, -1, NULL);
/* No Meta playlist used */
hls = hls_New(streams, 0, -1, NULL);
if (hls == NULL)
{
p_sys->b_error = true;
return VLC_ENOMEM;
msg_Err(s, "No HLS structure created");
err = VLC_ENOMEM;
break;
}
/* Get TARGET-DURATION first */
p = (uint8_t *)strstr((const char *)buffer, "#EXT-X-TARGETDURATION:");
if (p)
{
uint8_t *p_rest = NULL;
char *psz_duration = ReadLine(p, &p_rest, p_end - p);
if (psz_duration)
{
err = parse_TargetDuration(s, hls, psz_duration);
free(psz_duration);
p = NULL;
}
}
hls->version = version;
}
parse_M3U8ExtLine(s, hls, line);
}
/* Error during m3u8 parsing abort */
if (p_sys->b_error)
goto error;
if (strncmp(line, "#EXTINF", 7) == 0)
{
char *uri = ReadLine(p_begin, &p_read, p_end - p_begin);
if (uri == NULL)
err = VLC_EGENERIC;
else
{
err = parse_SegmentInformation(s, hls, line, uri);
free(uri);
}
p_begin = p_read;
}
else if (strncmp(line, "#EXT-X-TARGETDURATION", 21) == 0)
err = parse_TargetDuration(s, hls, line);
else if (strncmp(line, "#EXT-X-MEDIA-SEQUENCE", 21) == 0)
err = parse_MediaSequence(s, hls, line);
else if (strncmp(line, "#EXT-X-KEY", 10) == 0)
err = parse_Key(s, hls, line);
else if (strncmp(line, "#EXT-X-PROGRAM-DATE-TIME", 24) == 0)
err = parse_ProgramDateTime(s, hls, line);
else if (strncmp(line, "#EXT-X-ALLOW-CACHE", 18) == 0)
err = parse_AllowCache(s, hls, line);
else if (strncmp(line, "#EXT-X-DISCONTINUITY", 20) == 0)
err = parse_Discontinuity(s, hls, line);
else if (strncmp(line, "#EXT-X-VERSION", 14) == 0)
err = parse_Version(s, hls, line);
else if (strncmp(line, "#EXT-X-ENDLIST", 14) == 0)
err = parse_EndList(s, hls);
}
free(line);
}
line = NULL;
free(line);
free(tmp);
AccessClose(s);
return VLC_SUCCESS;
if (p_begin >= p_end)
break;
} while ((err == VLC_SUCCESS) && vlc_object_alive(s));
error:
free(line);
free(tmp);
AccessClose(s);
return VLC_EGENERIC;
return err;
}
#undef HTTPLIVE_MAX_LINE
/* The http://tools.ietf.org/html/draft-pantos-http-live-streaming-04#page-8
* document defines the following new tags: EXT-X-TARGETDURATION,
* EXT-X-MEDIA-SEQUENCE, EXT-X-KEY, EXT-X-PROGRAM-DATE-TIME, EXT-X-
* ALLOW-CACHE, EXT-X-STREAM-INF, EXT-X-ENDLIST, EXT-X-DISCONTINUITY,
* and EXT-X-VERSION.
*/
static int parse_HTTPLiveStreaming(stream_t *s)
static int get_HTTPLiveMetaPlaylist(stream_t *s, vlc_array_t **streams)
{
stream_sys_t *p_sys = s->p_sys;
char *p_read, *p_begin, *p_end;
assert(p_sys->hls_stream);
p_begin = p_read = stream_ReadLine(s->p_source);
if (!p_begin)
return VLC_ENOMEM;
/* */
int i_len = strlen(p_begin);
p_end = p_read + i_len;
assert(*streams);
if (strncmp(p_read, "#EXTM3U", 7) != 0)
{
msg_Err(s, "missing #EXTM3U tag .. aborting");
free(p_begin);
/* Download new playlist file from server */
uint8_t *buffer = NULL;
ssize_t len = access_ReadM3U8(s, &p_sys->m3u8, &buffer);
if (len < 0)
return VLC_EGENERIC;
}
do {
free(p_begin);
if (p_sys->b_error)
return VLC_EGENERIC;
/* Next line */
p_begin = stream_ReadLine(s->p_source);
if (p_begin == NULL)
break;
i_len = strlen(p_begin);
p_read = p_begin;
p_end = p_read + i_len;
if (strncmp(p_read, "#EXT-X-STREAM-INF", 17) == 0)
{
p_sys->b_meta = true;
char *uri = stream_ReadLine(s->p_source);
if (uri == NULL)
p_sys->b_error = true;
else
{
parse_StreamInformation(s, &p_sys->hls_stream, p_read, uri);
free(uri);
}
}
else if (strncmp(p_read, "#EXTINF", 7) == 0)
{
char *uri = stream_ReadLine(s->p_source);
if (uri == NULL)
p_sys->b_error = true;
else
{
hls_stream_t *hls = hls_GetLast(p_sys->hls_stream);
if (hls)
parse_SegmentInformation(s, hls, p_read, uri);
else
p_sys->b_error = true;
free(uri);
}
}
else
{
hls_stream_t *hls = hls_GetLast(p_sys->hls_stream);
if (hls == NULL)
{
if (!p_sys->b_meta)
{
hls = hls_New(p_sys->hls_stream, -1, -1, NULL);
if (hls == NULL)
{
p_sys->b_error = true;
return VLC_ENOMEM;
}
}
}
/* Parse M3U8 Ext Line */
parse_M3U8ExtLine(s, hls, p_read);
}
} while(p_read < p_end);
free(p_begin);
/* */
int count = vlc_array_count(p_sys->hls_stream);
for (int n = 0; n < count; n++)
{
hls_stream_t *hls = hls_Get(p_sys->hls_stream, n);
if (hls == NULL) break;
/* Parse HLS m3u8 content. */
int err = parse_M3U8(s, *streams, buffer, len);
free(buffer);
/* Is it a meta playlist? */
if (p_sys->b_meta)
{
msg_Dbg(s, "parsing %s", hls->url.psz_path);
if (get_HTTPLivePlaylist(s, hls) != VLC_SUCCESS)
{
msg_Err(s, "could not parse playlist file from meta index." );
return VLC_EGENERIC;
}
}
vlc_mutex_lock(&hls->lock);
if (!p_sys->b_live)
{
/* Stream size (approximate) */
hls->size = hls_GetStreamSize(hls);
}
vlc_mutex_unlock(&hls->lock);
}
return VLC_SUCCESS;
return err;
}
/* Reload playlist */
......@@ -1077,23 +967,6 @@ static int hls_ReloadPlaylist(stream_t *s)
int count = vlc_array_count(hls_streams);
/* Is it a meta playlist? */
if (p_sys->b_meta)
{
for (int n = 0; n < count; n++)
{
hls_stream_t *hls = hls_Get(hls_streams, n);
if (hls == NULL) goto fail;
msg_Info(s, "parsing %s", hls->url.psz_path);
if (get_HTTPLivePlaylist(s, hls) != VLC_SUCCESS)
{
msg_Err(s, "could not parse playlist file from meta index." );
goto fail;
}
}
}
/* merge playlists */
for (int n = 0; n < count; n++)
{
......@@ -1155,6 +1028,8 @@ static int BandwidthAdaptation(stream_t *s, int progid, uint64_t *bandwidth)
static int Download(stream_t *s, hls_stream_t *hls, segment_t *segment, int *cur_stream)
{
stream_sys_t *p_sys = s->p_sys;
assert(hls);
assert(segment);
......@@ -1167,10 +1042,10 @@ static int Download(stream_t *s, hls_stream_t *hls, segment_t *segment, int *cur
}
/* sanity check - can we download this segment on time? */
if (s->p_sys->bandwidth > 0)
if ((p_sys->bandwidth > 0) && (hls->bandwidth > 0))
{
uint64_t size = (segment->duration * hls->bandwidth); /* bits */
int estimated = (int)(size / s->p_sys->bandwidth);
int estimated = (int)(size / p_sys->bandwidth);
if (estimated > segment->duration)
{
msg_Warn(s,"downloading of segment %d takes %ds, which is longer then its playback (%ds)",
......@@ -1197,8 +1072,8 @@ static int Download(stream_t *s, hls_stream_t *hls, segment_t *segment, int *cur
return VLC_SUCCESS;
uint64_t bw = ((double)(segment->size * 8) / ms) * 1000; /* bits / s */
s->p_sys->bandwidth = bw;
if (hls->bandwidth != bw)
p_sys->bandwidth = bw;
if (p_sys->b_meta && (hls->bandwidth != bw))
{
int newstream = BandwidthAdaptation(s, hls->id, &bw);
......@@ -1321,7 +1196,7 @@ static int Prefetch(stream_t *s, int *current)
stream_sys_t *p_sys = s->p_sys;
int stream;
/* Try to pick best matching stream */
/* Try to pick best matching stream */;
again:
stream = *current;
......@@ -1452,44 +1327,6 @@ static void AccessClose(stream_t *s)
}
}
static char *AccessReadLine(access_t *p_access, uint8_t *psz_tmp, size_t i_len)
{
char *line = NULL;
char *begin = (char *)psz_tmp;
assert(psz_tmp);
int skip = strlen(begin);
ssize_t len = p_access->pf_read(p_access, psz_tmp + skip, i_len - skip);
if (len < 0) return NULL;
if ((len == 0) && (skip == 0))
return NULL;
char *p = begin;
char *end = p + len + skip;
while (p < end)
{
if (*p == '\n')
break;
p++;
}
/* copy line excluding \n */
line = strndup(begin, p - begin);
p++;
if (p < end)
{
psz_tmp = memmove(begin, p, end - p);
psz_tmp[end - p] = '\0';
}
else memset(psz_tmp, 0, i_len);
return line;
}
static int AccessDownload(stream_t *s, segment_t *segment)
{
stream_sys_t *p_sys = (stream_sys_t *) s->p_sys;
......@@ -1539,30 +1376,30 @@ static int AccessDownload(stream_t *s, segment_t *segment)
}
/* Read M3U8 file */
static uint8_t *access_ReadM3U8(stream_t *s, vlc_url_t *url)
static ssize_t access_ReadM3U8(stream_t *s, vlc_url_t *url, uint8_t **buffer)
{
stream_sys_t *p_sys = (stream_sys_t *) s->p_sys;
assert(*buffer == NULL);
/* Download new playlist file from server */
if (AccessOpen(s, url) != VLC_SUCCESS)
return NULL;
return VLC_EGENERIC;
ssize_t size = p_sys->p_access->info.i_size;
if (size == 0) size = 1024; /* no Content-Length */
msg_Err(s, "Stream size is %"PRId64, size);
uint8_t *buffer = calloc(1, size);
if (buffer == NULL)
*buffer = calloc(1, size);
if (*buffer == NULL)
{
AccessClose(s);
return NULL;
return VLC_ENOMEM;
}
size_t length = 0, curlen = 0;
ssize_t length = 0, curlen = 0;
do
{
length = p_sys->p_access->pf_read(p_sys->p_access, buffer + curlen, size - curlen);
length = p_sys->p_access->pf_read(p_sys->p_access, *buffer + curlen, size - curlen);
if ((length <= 0) || (length >= size))
break;
curlen += length;
......@@ -1577,19 +1414,19 @@ static uint8_t *access_ReadM3U8(stream_t *s, vlc_url_t *url)
} while (vlc_object_alive(s));
AccessClose(s);
return buffer;
return size;
}
static uint8_t *ReadM3U8(stream_t *s)
static ssize_t ReadM3U8(stream_t *s, uint8_t **buffer)
{
int64_t size = stream_Size(s->p_source);
assert(*buffer == NULL);
msg_Err(s, "Stream size is %"PRId64, size);
int64_t size = stream_Size(s->p_source);
if (size == 0) size = 1024; /* no Content-Length */
uint8_t *buffer = calloc(1, size);
if (buffer == NULL)
return NULL;
*buffer = calloc(1, size);
if (*buffer == NULL)
return VLC_ENOMEM;
int64_t len = 0, curlen = 0;
do {
......@@ -1607,10 +1444,11 @@ static uint8_t *ReadM3U8(stream_t *s)
*buffer = tmp;
}
} while (vlc_object_alive(s));
return buffer;
return size;
}
static char *ReadLine(uint8_t *buffer, uint8_t *remain, size_t len)
static char *ReadLine(uint8_t *buffer, uint8_t **remain, size_t len)
{
assert(buffer);
......@@ -1631,7 +1469,7 @@ static char *ReadLine(uint8_t *buffer, uint8_t *remain, size_t len)
/* next pass start after \n */
p++;
remain = p;
*remain = p;
return line;
}
......@@ -1681,14 +1519,21 @@ static int Open(vlc_object_t *p_this)
s->pf_peek = Peek;
s->pf_control = Control;
/* Select first segment to play */
if (parse_HTTPLiveStreaming(s) != VLC_SUCCESS)
/* Parse HLS m3u8 content. */
uint8_t *buffer = NULL;
ssize_t len = ReadM3U8(s, &buffer);
if (len < 0)
goto fail;
if (parse_M3U8(s, p_sys->hls_stream, buffer, len) != VLC_SUCCESS)
{
free(buffer);
goto fail;
}
free(buffer);
/* Choose first HLS stream to start with */
int current = p_sys->playback.stream = 0;
p_sys->playback.segment = p_sys->download.segment =
p_sys->b_live ? live_ChooseSegment(s, current) : 0;
p_sys->playback.segment = p_sys->download.segment = ChooseSegment(s, current);
if (p_sys->b_live && (p_sys->playback.segment < 0))
{
......@@ -1697,7 +1542,7 @@ static int Open(vlc_object_t *p_this)
if (Prefetch(s, &current) != VLC_SUCCESS)
{
msg_Err(s, "fetching first segment.");
msg_Err(s, "fetching first segment failed.");
goto fail;
}
......
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